Home / 13,320.98-18,389.60-8,286.82

Finding the Fourth Proportional to 13,320.98, 18,389.60 and 8,286.82

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Solution

The fourth proportional to 13,320.98, 18,389.60 and 8,286.82 is: 11,439.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.98 : 18,389.60 = 8,286.82 : x
  2. Step 2: Convert to fraction form
    13,320.98/18,389.60 = 8,286.82/x
  3. Step 3: Cross multiply
    13,320.98x = 18,389.60 × 8,286.82
  4. Step 4: Simplify right side
    13,320.98x = 152,391,305.07
  5. Step 5: Solve for x
    x = 152,391,305.07/13,320.98
  6. Step 6: Final answer
    x = 11,439.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.